低对称性SiO2/Ag核壳复合纳米结构的银镜反应制备及表面增强拉曼散射活性研究

摘要

Low-symmetry SiO2/Ag core-shell composite nanostructures have been prepared by simply carrying out the silver mirror reaction on the top of the self-assembled monolayer arrays of SiO2 nanoparticles. The surface morphologies and optical properties of the core-shell composite nanostructures were characterized by TEM, SEM and UV-Vis spectroscopy. The surface-enhanced Raman scattering(SERS) activities of the core-shell composite nanostructures were investigated with methylene blue as a probemolecule.%利用银镜反应在自组装的SiO2纳米粒子单层膜上制备了低对称性的SiO2/Ag核壳复合纳米结构.通过透射电镜(TEM)、扫描电镜(SEM)和紫外-可见分光光度计(UV-Vis)对核壳复合纳米结构的表面形貌和光学性质进行了表征.以亚甲基蓝作为探针分子,研究了低对称性SiO2/Ag核壳复合纳米结构的表面增强拉曼散射(SERS)活性.